JP6606895B2 - Electronic equipment, electronic equipment unit and display - Google Patents

Description

  The present invention relates to an electronic device such as a display on which a communication dongle is detachably mounted, and an electronic device unit including such an electronic device and a communication dongle.

  In order to add a communication function to an electronic device, a communication dongle may be attached to a connector of the electronic device. The electronic device (computer) described in Patent Document 1 includes a housing chamber for housing a communication dongle in the housing. When the communication dongle is attached to the connector, the communication dongle is in the housing. It is in a housed state. A louver is provided on the side of the electronic device, and heat from the communication dongle is released to the outside of the housing through the louver.

Japanese Patent Laid-Open No. 11-353055

  When the communication dongle is accommodated in the housing, the heat stays in the housing, and there is a possibility that the parts of the electronic device are damaged. In addition, the communication dongle itself may malfunction or be damaged by the heat accumulated in the housing and the heat generated by itself.

  In view of this point, an object of the present invention is to provide an electronic device that can efficiently release heat from a communication dongle accommodated in a housing to the outside of the housing. Another object of the present invention is to provide an electronic device unit including such an electronic device and a communication dongle. It is another object of the present invention to provide a display capable of efficiently releasing heat from a communication dongle accommodated in the housing to the outside of the housing.

  In order to solve the above-described problems, the present invention includes a connector to which a communication dongle can be attached, and the communication dongle attached to the connector is accommodated in the housing. The communication dongle mounted on the connector is provided with an opening that allows the communication dongle to be seen from the outside of the housing.

  According to the present invention, when the communication dongle attached to the connector generates heat, the heat is released to the outside through the opening provided in the housing. Therefore, heat from the communication dongle can be released more efficiently than when the heat is released to the outside of the housing through the louver.

  In the present invention, it is desirable that the communication dongle attached to the connector is visible through the opening when the housing is viewed from above. In this way, the heat generated in the communication dongle connected to the connector can be released to the outside of the housing by the airflow generated by this heat.

  In the present invention, a sealing member that is detachably attached to the housing and seals the opening can be provided. In this way, when the communication dongle is not connected to the connector, the opening can be blocked by the blocking member. Here, if the opening is sealed with a sealing member, foreign matter such as dust can be prevented from entering the housing. Moreover, the aesthetics of an electronic device can be improved by sealing an opening part.

  In the present invention, the housing includes a second opening that makes the communication dongle attached to the connector visible from the outside of the housing, and when the housing is viewed from below, the second It is desirable that the communication dongle attached to the connector is visible through the opening. In this way, when the communication dongle connected to the connector generates heat, an air flow rising from the second opening via the communication dongle and the opening is formed by the generated heat. Therefore, it is easy to release the heat generated in the communication dongle to the outside of the housing. Further, the communication dongle can be cooled by the air taken in from the outside of the housing through the second opening.

  In the present invention, it is desirable that at least a part of the opening and the second opening overlap when the housing is viewed from above. In this way, it is easy to form an airflow rising from the second opening via the communication dongle and the opening.

  In the present invention, it is preferable that the housing includes a bottom portion including the second opening and a protrusion protruding downward from the bottom portion. In this way, when the electronic device is installed on a desired installation surface, a space can be formed between the installation surface and the bottom by the protrusion. Therefore, air can be taken into the housing through the second opening from the space between the installation surface and the bottom. Therefore, when the communication dongle connected to the connector generates heat, an air flow rising from the second opening via the communication dongle and the opening is easily formed. Moreover, the communication dongle can be cooled by the air taken into the housing through the space and the second opening between the installation surface and the bottom.

  In the present invention, the housing includes a housing body having the connector, the communication dongle, and a housing main body having the second opening, and is detachably fixed to the housing main body and the second opening. A detachable member that partially seals the portion, and the second opening is an insertion path for inserting the communication dongle into the accommodation chamber when the communication dongle is attached to the connector, The detachable member preferably covers a part of the communication dongle attached to the connector from below while being fixed to the housing body. This makes it easy to accommodate the communication dongle in the housing. In addition, the communication dongle attached to the connector can be prevented from falling off the housing.

  In the present invention, it is preferable that the detachable member includes a disconnection prevention mechanism that prevents the communication dongle attached to the connector from being detached from the connector while being fixed to the housing body. In this way, it is possible to prevent the communication dongle attached to the connector from being detached from the connector inside the housing.

  In the present invention, in order to detachably fix the detachable member to the housing, the detachable member can be fixed to the housing body with a screw.

  Next, an electronic device unit according to the present invention includes the electronic device described above and a communication dongle connected to the connector.

  According to the present invention, the communication dongle is accommodated in the housing of the electronic device. Therefore, it is possible to prevent the communication dongle from being damaged when the electronic device unit is moved. Further, the communication dongle can be prevented from being inadvertently removed from the connector. Further, even when the communication dongle generates heat, the heat is released to the outside of the housing through the opening. Therefore, the heat from the communication dongle does not stay in the housing, and the internal components of the electronic device can be prevented from being damaged. Further, the communication dongle itself can be prevented from being damaged by the heat accumulated in the housing or the heat from the communication dongle.

  In the present invention, the electronic device may be a display. In this way, when a communication dongle for adding a wireless communication function to the display is accommodated in the housing, heat from the communication dongle stays in the housing and the display components are damaged. Can be prevented. Further, the communication dongle itself can be prevented from being damaged by the heat accumulated in the housing and the heat from the communication dongle.

  Next, the present invention provides a display including a connector to which a communication dongle can be attached, and the communication dongle attached to the connector is accommodated in the housing, wherein the housing is the communication attached to the connector. An opening for enabling the use dongle to be visually recognized from the outside of the housing is provided.

  According to the present invention, when a communication dongle for adding a wireless communication function to the display is accommodated in the housing, heat from the communication dongle stays in the housing and the display components are damaged. Can be prevented. Further, the communication dongle itself can be prevented from being damaged by the heat accumulated in the housing and the heat from the communication dongle.

It is explanatory drawing of a POS system provided with a display unit. It is a perspective view at the time of seeing a display unit from the upper part. It is a perspective view at the time of seeing a display unit from the lower part. It is sectional drawing of a display unit. It is a perspective view of the display which removed the detachable member and the wireless communication dongle. It is a perspective view of the display which attached the sealing member. It is a perspective view of the display of a modification.

  Below, with reference to drawings, the display which is embodiment which applied this invention is demonstrated.

(POS system)
FIG. 1 is an explanatory diagram of a POS system including a display unit to which the present invention is applied. As shown in FIG. 1, the display unit 1 of this example includes a display 2 and a wireless communication dongle (communication dongle) 3. The display unit 1 constitutes a POS system 7 together with the tablet-type POS terminal device 5 and the printer 6. In the POS system 7, the display 2 is communicably connected to the printer 6 via a cable 8. The display 2 is communicably connected to the POS terminal device 5 via a wireless LAN 9 by a wireless communication dongle 3.

  When the accounting process is performed in the POS terminal device 5, receipt data for issuing a receipt is transmitted from the POS terminal device 5 to the display 2 via the wireless LAN 9. The display 2 that has received the receipt data displays the receipt data on the display unit 11. The display 2 that has received the receipt data transfers the receipt data to the printer 6 via the cable 8. The printer 6 that has received the receipt data issues a receipt based on the receipt data (prints the receipt data).

(display)
FIG. 2A is a perspective view of the display unit 1 to which the present invention is applied as viewed from the upper front side, and FIG. 2B shows the display unit 1 of FIG. 2A from the upper rear side. It is a perspective view at the time of seeing. FIG. 3 is a perspective view of the display unit 1 shown in FIG. FIG. 4 is a cross-sectional view of the display unit 1 taken along line AA in FIG. Hereinafter, three directions orthogonal to each other will be described as a width direction X, a front-rear direction Y, and a vertical direction Z. In the display 2, the side on which the display unit 11 is located is the front Y1 in the front-rear direction Y, and the opposite side is the rear Y2. One of the width directions X is defined as a first direction X1, and the other is defined as a second direction X2.

  As shown in FIG. 2A, the display 2 includes a rectangular display unit 11 that is long in the width direction X, and a main body unit 12 that supports a lower portion of the display unit 11 from the rear Y2. The display unit 11 has a flat rectangular parallelepiped shape in which the front-rear direction Y is short with respect to the width direction X and the vertical direction Z. The display unit 11 includes a rectangular liquid crystal panel 13 on the front surface. The lower part of the rear surface of the display unit 11 is connected to the main body unit 12.

  As shown in FIG. 2B, the main body 12 includes a housing 15 having a square contour when viewed from above. The housing 15 has a flat shape in which the vertical direction Z is short with respect to the dimensions in the width direction X and the front-rear direction Y. As shown in FIG. 3, the housing 15 includes a housing body 16 and a detachable member 17 that is detachably fixed to a lower end portion of the housing body 16. The housing body 16 and the detachable member 17 are made of resin. The detachable member 17 is fixed to the housing body 16 with screws 28 (see FIG. 5).

  As shown in FIG. 4, the housing main body 16 includes a ceiling plate 18 that defines the upper surface of the main body 12, a bottom plate 19 that defines the lower surface, an outer peripheral portion of the ceiling plate 18 that extends in the vertical direction Z, and the bottom plate 19. A frame plate 20 for connecting the outer peripheral edge portions is provided. A connector 21 to which the wireless communication dongle 3 is attached is disposed in the housing body 16. A housing chamber 22 is provided in the housing body 16 for housing the wireless communication dongle 3 attached to the connector 21.

  As shown in FIG. 2 (b), the ceiling board 18 includes a protruding portion 25 that protrudes upward at the center front side portion in the width direction X thereof. The protrusion 25 has a triangular shape that is tapered upward when viewed from the width direction X. The display unit 11 is connected to the front inclined surface of the protrusion 25. A first opening 26 is formed at the rear Y2 of the protrusion 25 in the ceiling plate 18. The first opening 26 is rectangular and is located in the center of the ceiling plate 18 in the width direction X.

  As shown in FIGS. 3 and 4, the housing body 16 includes a square bottom portion 27 that protrudes downward in the center of the lower end portion in the width direction X. The bottom 27 is constituted by the bottom plate 19 and the detachable member 17. More specifically, one corner portion of the four corners of the bottom portion 27 is formed by the detachable member 17. A rectangular second opening 29 is formed at the rear end portion of the bottom portion 27 (the rear portion of the bottom plate 19). As shown in FIG. 3, the second opening 29 has an overlapping opening 30 that overlaps the first opening 26 when viewed from the vertical direction Z, and a spread that extends from the overlapping opening 30 in the second direction X2 in the width direction X. An opening portion 31 is provided. In a state where the detachable member 17 is fixed to the housing body 16, the detachable member 17 closes the spread opening portion 31 of the second opening 29. As shown in FIG. 4, the detachable member 17 includes a projecting portion 33 that projects upward (projects into the accommodation chamber 22).

  At the four corners of the bottom 27, protrusions 34 are formed that protrude downward. Each protrusion 34 is a leg of the main body 12, and an elastic member 35 such as rubber is affixed to the front end surface thereof. One of the four protrusions 34 is provided on the lower surface of the detachable member 17.

  As shown in FIG. 4, the connector 21 is disposed in the first direction X <b> 1 of the first opening 26 and the second opening 29 between the ceiling plate 18 and the bottom plate 19. In this example, the connector 21 is of USB (Universal Serial Bus) standard and includes a rectangular mounting opening when viewed from the width direction X. The storage chamber 22 is a space including the connector 21 and extending from the connector 21 in the second direction X2.

  A partition wall 37 that partially partitions the storage chamber 22 is provided between the connector 21 and the first opening 26 and the second opening 29 in the width direction X. When viewed from the width direction X, the partition wall 37 includes a rectangular opening 37a at a position overlapping the connector mounting opening. An annular packing 38 is attached to the opening edge of the opening 37 a in the partition wall 37 on the first opening 26 and second opening 29 sides. In addition, by providing the partition wall 37 in the storage chamber 22, a creeping distance from the first opening 26 and the second opening 29 to the connector 21 is secured. Thereby, the connector 21 is protected from static electricity.

  Here, the wireless communication dongle 3 includes a connector portion 40 inserted into the connector 21 and a dongle body 41. The storage chamber 22 extends from the end of the connector 21 in the second direction X2 longer than the sum of the length of the wireless communication dongle 3 and the length of the connector portion 40 of the wireless communication dongle 3. .

  The wireless communication dongle 3 is inserted into the connector 21 in the first direction X1 from the side where the first opening 26 and the second opening 29 are located, with the connector 40 oriented in the first direction X1. . In a state where the wireless communication dongle 3 is attached to the connector 21, the end surface of the dongle body 41 in the first direction X <b> 1 contacts the packing 38, and the dongle body 41 and the partition wall 37 are in a liquid-tight state.

  When the display 2 with the wireless communication dongle 3 attached to the connector 21 is viewed from above, the wireless attached to the connector 21 through the first opening 26 as shown in FIG. The communication dongle 3 is visible. That is, the first opening 26 is provided at a position that partially overlaps the storage chamber 22 when viewed from the vertical direction Z, and a part of the wireless communication dongle 3 attached to the connector 21 is the first opening. It is exposed upward via the portion 26.

  When the wireless communication dongle 3 is attached to the connector 21 and the display 2 in a state where the detachable member 17 is fixed to the housing body 16 is viewed from below, as shown in FIG. The wireless communication dongle 3 attached to the connector 21 is visible through the overlapping opening portion 30 of the portion 29. That is, the overlapping opening portion 30 is provided at a position overlapping the accommodation chamber 22 when viewed from the vertical direction Z, and a part of the wireless communication dongle 3 attached to the connector 21 passes through the second opening 29. Exposed downward.

  Further, when the wireless communication dongle 3 is attached to the connector 21 and the detachable member 17 is fixed to the housing body 16, as shown in FIG. 4, the protruding portion (detachment prevention mechanism) 33 of the detachable member 17 is provided. Project into the storage chamber 22. The protruding portion 33 protruding into the accommodation chamber 22 faces the wireless communication dongle 3 at a position adjacent to the wireless communication dongle 3 in the second direction X2 with a small gap. Accordingly, the protruding portion 33 prevents the wireless communication dongle 3 attached to the connector 21 from coming out of the connector 21 inside the housing 15 when the detachable member 17 is attached to the housing body 16. It becomes a mechanism.

(Installing wireless communication dongle)
FIG. 5 is a perspective view when the display 2 from which the detachable member 17 and the wireless communication dongle 3 are removed is viewed obliquely below the rear Y2. When the wireless communication dongle 3 is attached to the connector 21 in the housing body 16, first, the detachable member 17 is removed from the housing body 16. Thereby, the spread opening part 31 of the 2nd opening part 29 is made into an open state. When the spread opening portion 31 is in an open state, the second opening 29 (the overlapping opening portion 30 and the spread opening portion 31) exposes the entire portion of the storage chamber 22 on the second direction X2 side from the housing body 16 to the outside. . Here, the second opening 29 (the overlapping opening portion 30 and the widening opening portion 31) has a sufficient width to receive the wireless communication dongle 3 from the outside to the inside of the housing body 16. Therefore, the wireless communication dongle 3 is inserted into the accommodation chamber 22 using the second opening 29 as an insertion path for inserting the wireless communication dongle 3 into the accommodation chamber 22. Then, the wireless communication dongle 3 inserted into the accommodation chamber 22 is moved in the first direction X 1, and the connector portion 40 of the wireless communication dongle 3 is attached to the connector 21. Thereafter, the detachable member 17 is fixed to the housing body 16 with screws 28.

  Here, as shown in FIG. 4, when the detachable member 17 is fixed to the housing body 16, the protruding portion 33 of the detachable member 17 faces the end portion in the second direction X <b> 2 of the wireless communication dongle 3 with a small gap. . As a result, the wireless communication dongle 3 attached to the connector 21 is prevented from coming out of the connector 21 inside the housing 15.

  Further, in this example, when the detachable member 17 is fixed to the housing body 16 with the screw 28, the wireless communication dongle 3 attached to the connector 21 is accommodated in the housing 15. Accordingly, it is possible to prevent the wireless communication dongle 3 and the connector 21 from being damaged when the display 2 is moved. Further, it is possible to prevent the wireless communication dongle 3 from being inadvertently detached from the connector 21.

(Heat dissipation from the display)
The display 2 on which the wireless communication dongle 3 is mounted is installed at a cash register counter or the like with the bottom 27 of the main body 12 facing downward. When the display 2 is turned on after installation, the wireless communication dongle 3 operates and wireless communication with the POS terminal device 5 becomes possible.

  Here, the wireless communication dongle 3 tends to generate heat. Therefore, when the wireless communication dongle 3 is accommodated in the housing 15, heat from the wireless communication dongle 3 may stay in the housing 15, and components of the display 2 may be damaged. Further, the wireless communication dongle 3 itself may be damaged by the heat accumulated in the housing 15 and the heat from the wireless communication dongle 3.

  On the other hand, in this example, when the housing 15 is viewed from above, the wireless communication dongle 3 attached to the connector 21 via the first opening 26 is provided as shown in FIG. Visible. When the housing 15 is viewed from below, the wireless communication dongle 3 attached to the connector 21 is visible through the overlapping opening portion 30 of the second opening 29 as shown in FIG. Furthermore, when the housing 15 is viewed from the vertical direction Z, the overlapping opening portion 30 of the first opening 26 and the second opening 29 overlaps. In addition to this, the housing 15 has a bottom portion 27 provided with a second opening 29 and a protrusion 34 protruding downward from the bottom portion 27. Therefore, as shown in FIG. When installed on the surface 10, a space is formed between the installation surface 10 and the bottom 27 by the protrusion 34. Therefore, when the wireless communication dongle 3 connected to the connector 21 generates heat, the space between the installation surface 10 and the bottom 27, the overlapping opening portion 30 of the second opening 29, the wireless communication dongle 3 and the first An airflow S rising through the one opening 26 in this order is formed. Therefore, the heat generated in the wireless communication dongle 3 is easily released to the outside of the housing 15. Further, the wireless communication dongle 3 can be cooled by the air taken into the second opening 29 from the outside of the housing 15 through the space between the installation surface 10 and the bottom 27.

(Removing the wireless communication dongle)
6A is a perspective view of the display 2 in a state where the wireless communication dongle 3 is removed and a sealing member is attached, as viewed obliquely from the upper rear, and FIG. 6B is a rear oblique view of the sealing member. It is a perspective view at the time of seeing from the downward direction.

  When the wireless communication function is not necessary for the display 2, the wireless communication dongle 3 is removed from the display 2. When removing the wireless communication dongle 3, as shown in FIG. 5, the detachable member 17 is removed from the housing body 16 to open the widened opening 31 of the second opening 29. Here, when the spread opening portion 31 is in an open state, the second opening portion 29 (the overlapping opening portion 30 and the spread opening portion 31) has a sufficient width to pull out the wireless communication dongle from the storage chamber 22 to the outside. Have. Therefore, the wireless communication dongle 3 is removed from the storage chamber 22 by using the second opening 29 as a drawing path for drawing out the wireless communication dongle 3 from the storage chamber 22. Thereafter, the detachable member 17 is fixed to the housing body 16 with screws 28.

  Here, when the detachable member 17 is fixed to the housing main body 16 after the wireless communication dongle 3 is removed, the main body 12 has a through hole having the first opening 26 as the upper end opening and the overlapping opening 30 as the lower end opening. Is formed. If there is such a through hole, foreign matter such as dust may enter the housing 15. Therefore, as shown in FIG. 6, when the wireless communication dongle 3 is removed, a sealing member 45 that detachably seals the first opening 26 is attached to the housing 15.

  The sealing member 45 is made of resin. As shown in FIG. 6B, the blocking member 45 includes a rectangular plate-like lid portion 46 that is larger than the first opening portion 26 and a rectangular frame-like projection portion 47 that projects downward from the lid portion 46. The frame-shaped protrusion 47 is sized to be inserted into the first opening 26. The frame-like protrusion 47 includes slits 48 extending in the up-down direction Z at the four corners.

  The sealing member 45 is attached to the housing 15 with the frame-shaped protrusion 47 inserted into the first opening 26 from above. In a state in which the sealing member 45 is mounted on the housing 15, the frame-like protrusion 47 is inserted into the first opening 26 and fits into the first opening 26. Further, the lower end portion of the frame-like protruding portion 47 is inserted into the overlapping opening portion 30 and is fitted into the overlapping opening portion 30. And the cover part 46 covers the 1st opening part 26 from upper direction. Therefore, the sealing member 45 can prevent foreign matter from entering the housing 15. Further, since the first opening 26 is covered with the lid 46, the aesthetic appearance when the display 2 is viewed from above is improved.

(Other embodiments)
In the above example, the first opening 26 and the second opening 29 are provided on the upper surface and the lower surface of the housing 15, respectively, but the wireless communication dongle 3 attached to the connector 21 is provided on the side surface of the housing 15. An opening that is visible from the outside of 15 may be provided. In this case, the opening provided on the side surface of the housing 15 and the first opening 26 and the second opening 29 formed on the upper and lower surfaces of the housing 15 may be continuous.

  FIG. 7 is a perspective view when a display of a modified example in which the first opening 26 and the second opening 29 provided in the housing 15 are continuously provided by providing the opening on the side surface of the housing 15 is viewed obliquely from the rear Y2. FIG. In the display 2 </ b> A of this example, an opening 50 is provided on the side surface (frame plate 20) of the housing 15, and the opening 50 is provided on the first opening 26 provided on the upper surface of the housing 15 and the lower surface of the housing 15. The second opening 29 is provided continuously. As a result, the housing 15 of the display 2A is provided with a cutout portion in which the housing 15 is cut out so as to reach the storage chamber 22 from the rear Y2 toward the front. Also in the display 2A of this example, the same effect as the display 2A can be obtained.

  In addition, when the wireless communication dongle 3 is mounted in the housing when the wireless communication dongle 3 is mounted on an electronic device different from the display, for example, a printer, the wireless communication dongle 3 can be visually observed in the housing. If the opening is provided, the heat generated in the wireless communication dongle 3 can be efficiently released to the outside of the housing 15. Even when a wired communication dongle is mounted on an electronic device, if the housing is provided with an opening that allows the wired communication dongle to be seen, heat generated by the wired communication dongle can be efficiently transferred to the outside of the housing. Can be released.

1 ··· Display unit (electronic device unit) 2 · 2A ··· Display (electronic device) 3 · · Wireless communication dongle (communication dongle) 5 · · POS terminal device 6 · · Printer 7 · · · POS system, 8 ... cable, 9 ... wireless LAN, 10, installation surface, 11 ... display section, 12 ... main body, 13 ... liquid crystal panel, 15 ... housing, 16 ... housing body, 17 ... -Detachable member, 18-Ceiling board, 19-Bottom plate, 20-Frame plate, 21-Connector, 22-Storage chamber, 25-Projection, 26-First opening (opening), 27..Bottom part, 28..Screw, 29..Second opening part (second opening part), 30..Overlapping opening part, 31..Expansion opening part, 33..Projection part (prevention mechanism), 34 .. Projection, 35 .. Elastic member, 37. 37a ··· Opening portion 38 ··· Packing 40 ·· Connector portion 41 · · Dongle body 45 · · Blocking member 46 · · Lid portion · · · 47 · · · Projection of frame shape · 48 · · · slit 50 .. opening, X .. width direction, X1... First direction, X2... Second direction, Y .. front-rear direction, Y1 .. forward, Y2.

Claims (10)

A housing;
A first opening provided in the housing;
A second opening different from the first opening;
A detachable member that is detachably fixed to the housing and covers a part of the second opening;
A connector provided inside the housing, to which a communication dongle can be attached;
With
The communication dongle attached to the connector is:
Exposed through the first opening and the second opening;
The detachable member is
An electronic apparatus that covers a part of the communication dongle attached to the connector when fixed to the housing.   The electronic device according to claim 1, wherein the communication dongle attached to the connector can be visually recognized through the first opening when the housing is viewed from above.   The electronic device according to claim 2, wherein the communication dongle attached to the connector can be visually recognized through the second opening when the housing is viewed from below.   The electronic device according to claim 3, wherein the first opening and the second opening overlap at least partially when the housing is viewed from above.   The electronic device according to claim 1, wherein the housing includes a bottom portion including the second opening and a protrusion protruding downward from the bottom portion. The housing is
A housing for housing the connector and the communication dongle;
The second opening is
The electronic device according to claim 1, wherein when the communication dongle is attached to the connector, the electronic dongle becomes an insertion path for inserting the communication dongle into the storage chamber.   The electronic device according to claim 1, wherein when the detachable member is fixed to the housing, a part of the communication dongle attached to the connector is covered from below. The detachable member is
The electronic device according to claim 1, further comprising a disconnection prevention mechanism that prevents the communication dongle attached to the connector from being disconnected from the connector. The detachable member is
The electronic device according to claim 1, wherein the electronic device is fixed to the housing with a screw. A housing;
A first opening provided in the housing;
A second opening different from the first opening;
A detachable member that is detachably fixed to the housing and covers a part of the second opening;
A connector provided inside the housing, to which a communication dongle can be attached;
With
The communication dongle attached to the connector is:
Exposed through the first opening and the second opening;
The detachable member is
A display that covers a portion of the communication dongle attached to the connector when secured to the housing.